Brake-actuating device.



No. 823,966. PATENTED JUNE 19, 1 I J. POST. 906

BRAKE AGTUATING DEVICE.

APPLICATION FILED IEB.12,1906' 3 SHEETS-SHEET 1 damn,

No. 823,966. PATENTED JUNE 19, 1906. J. POST.

BRAKE AGTUATING DEVICE.

APPLICATION FILED FE'B.1'2.'1906.

3 SHEETS-SHEET 2.

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No. 823,966. PATENTED JUNE 19, 1906.

BRAKE AGTUATING DEVICE.

AP PLIOATIONI'ILED FEB. 12. 1905.

3 SHEETS-SHEET 3.

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' Figure the United States,

- va ves, and Fig. 6 aside view of one of the UNITED STATES PATENT OFFICE ,c JOHN POST, OF'PHILADELPHIA, PENNSYLVANIA. I

BRAKE-ACTUATING DEVICE- Application filed February 12 1906. Serial No. 300,796.

To all whom it may concern:

1 motorman or brakeman standing on the plat- Be it known that 1, JOHN Pos'r,

a citizen of form. and a resident of Phila- G-represents a pipe connecting each valvedelphia, in the county of Philadelphia and casing O with steam-pipe A. State of Pennsylvania, have invented certain H represents the brake-shoes suspended new and useful Improvements in Brakeby means of brackets I from the car-body, J Actuating Devices, of which the followingis representing the wheels, which are shown a specification. I mounted on double trucks, though it is ap- Myinvention relates to devices for actuparent that triple-wheeled trucks may be ating car-brakes; and it consists in securing substituted, if desired. the brake-shoes to arms secured tothe pis- K represents a cylinder secured above ton-rods of steam-cylinders and also the proeach pair of brake-shoes H, with a piston L vision of a steam-circulating system connecttherein held normally in a raised position by ing said cylinders with controller-valves at a coil-spring M. The lower' end of the cylineach end of the car, which valves are in turn der K is open and provided with, a central connected with a steam-boiler. Valves are bearingN, connected with the sides of the also provided in the pistons of the cylinders cylinder by means of radial arms at. to drain the cylinders and conduits of the water of condensation, said valves being so 0 represents the piston-rod, secured to piston L and slidable in bearing N The brakeconstructed that they open automatically when the steam-pressure ceases and are shoes H are connected with the free end of closed by the steam-pressure and remain piston-rod O by means of arms 0, said arms closed While the pressure of steam is on.

forming a toggle-joint, so that when the piston-rod O is pushed downward by the action The construction and advantages of my invention Will be explained in detail hereinof the steam, as hereinafter described, the brake-shoes are pushed against the tread of after and illustrated in the accompanying drawings, in which the wheels J. P represents a pipe extending transversely 1 is a plan view'of the under portion of a car, showing particularly the sys of the car and connected with the tops of cylinders K; Q, pipes connecting each valvetem employed in my improvedbrake; Fig. casing C with the adjacent pipe P, and R a 2, a sideview; Fig. 3, an enlarged view, in vertical section, of one of the cylinders and pipe connecting the pipes P, suitable coupin the piston therein, showing the drain-valve;

gs S being provided to connect said pipes together. Fig. 4:, a view of the bottom of the cylinder; Fi 5, a detail view of one of the controller- The pipes P are made higher in theirmiddle portions than at their ends, so that the water and steam contained'therein after the live steam has been cut off drains toward the cylinders ateach end thereof, while the pipesQ are arranged so that they drain toward the pipes P, being higher at their ends secured to the controllervalves than where connected-with pi es P, and 'pipe R for the same reason is mad; higher in its middle than at its ends where connected with pipes-P It will be understood. from this construction that wardthe cylinders K. A dram-valve is provided in each piston L, consisting of an opening T in the piston, having its lower end provided with a perforated diaphragm U-with a central bearing u to receive the valve-stem '11, secured to the valve-piston V, W representing transverse pipes connecting the cylinders.

Similar reference characters indicate corresponding parts throughout the several views. A represents a pipe connected with any source of live steam, such as a boiler carried by the car for supplying steam to a motor for driving the ve cle, it being thought un necessary to illustrate this structure, as any other source, such as a boiler of a locomotive, may be substituted without affecting the .spirit of my invention. B represents a controller-valve located onthe platform at each end of the carand consisting of a casing C, in which is mounted the valve-pistonD, operated by means of a crankhandle secured to operating-rod D, revolubly mounted in'a boxing F, mounted on the platform, said crank-handle being conveniently positioned for: operation by the to limit the upward movement of the valve under the implulse of coil-spring Said coil-spring assufiicient tension'fgtolraise Patented June 19,1906.

all the pipes drain to a button or head on the lower end of the stem the valve V only when the pressure of the steam is cut off, but allowing the valve to close when the steam is turned into pipes Q, P, and R and cylinders K.

represents a shoulder on the inner side of the upper end of each cylinder K to limit the upward movement of the piston L therein under the impulse of s chamber Z is provided in the cylinder to receive the steam and the operation of the drain-valve piston V is not interfered with.

It will be understood from this description that when the valve-piston D at either 'or both ends of the car is opened by turning the crank-handle E the steam entering the pipes Q Will pass into the pipeP adjacent to the piston D and through pipe R to the other pipe P, closing the drain-valves U and passing into cylinders K, depress the pistons L therein, and actin through arms O set the brakeshoes Hjon t e heads 01' wheels-J, the pressure of the brake shoes I-I being governed by the amount of steam admitted to said pipes. I, When the piston valve D is turned. so as to shut off the steam Tromthepipes I, Q, and R, the springs M return the is'tons L to their normal position, 'unse'tting the brakes, and at the same time the springs X o'pen'the drainvalves V to drain the steam and water ofcondensat ion from said pipes and cylinders.

Having thus described my invention, what claim is' 1. In a'car-brake, cylinders, the brake-s oes operatively 'con n'ec'ted with said pistons, a pipe connected with a source of steam, bular connections between said valves and the steam-pipe, tubularconnections between said valves and the cylinders all 'ofs and tubular connections arranged drain to said cylinders, and means said cylinders, described.

2. In a car-brake, cylinders, pistons insaid cylinders, coil-springs in said cyl ing against said pistons, the 'brakeshoes opera'tivel steamp1pe, controller-valves, b nections between pipe, tubular c and the cylinders, all of said lar'connec'tions arranged so as cylinders, and means to drain substpnti'ally as shown and 'de to 'drain substantially 'as shown and scribed.

j n'a'car-brake, cylinders, pistons in said cylinders, the brake-shoes operatively con-j nected with said pistons, a steam-pipe, "controller-va'lves, tubular connections between j said valves and the steam-pipe, tubular jcon- J nections between said "valves and cylinders, and drain-valves in said pistons to relieve the cylinders and connecting-pipes of water oil condensation, substantially as shown and described.

4. In a car-brake, cylinders, pistons in said pring M, so that a cylinders, pistonsinsaid controller-valves, tu-

aid pipes so as to inders beary connected with said pistons, a ular consaid valves and the steamonnections between said'valves pipes and tubu- F 'to'drain to said f said cylinders,

cylinders, the brake-shoes operatively connected with said pistons, a steam-pipe, controller-valves, tubular connections between said valves and the steam-pipe, tubular connections between said valves and cylinders, said tubular connections arranged to drain into said cylinders, valves in said pistons, and springs to actuate said valves when steam is cut off Irom said cylinders to drain the tubular connections and cylinders of water of condensation, substantially as shown and described.

5. In a car-brake, cylinders, pistons in said cylinders, coil-springs in said cylinders bearing against said pistons, the brake-shoes operatively connected with said pistons, a steam-pipe, controller-valves, tubular connections between said valves and "the steampipe, tubular connections "between the valves and the cylinders, and drain-valves in said pistons to relieve said cylinders and tubular connections of water of condensation, su bstantially as shown and described.

6. In a car-brake, cylinders, pistons insaid cylinders, coil-springs in said cylinders bearing against said pistons, the brakechoes operatively connected with said pistons, a steam-pipe, 'controller valves, tubular connections between said valves and the steampipe, tubularcolmections hetween the valves and the cylinders, said tubular connections arranged to drain into said cylinders, valves in said pistons, and springs to actuate said Valves to open them when the supply of steam "is cut off from said cylinders, substantially as shown and described.

7. In a car-brake, cylinders, pistons said cylinders, coil-springs in said cylinders hearing against said pistons, a piston-rod secured to each piston, brake-shoes, arms connecting said brake-shoes and piston-rods, transverse pipes *connectingsaid cylinders in pairs and arranged to drain into said cylinders, a pipe connecting said transverse pipes and arranged to drain thereinto, controller-valves, pipes connecting said controller-valves and transverse pipes and arranged 'to drain there- 'into, avalve in each piston, a coil-spring to hit each valve, and a pipe connected with each controller-valve and supply, substantially as shown and described.

'8. In combinationwith a railway-car having a platform ateachend, cylinders, pistons d cylinders, the brake-shoes operatively connected with said pistons, apipeconnected with a source of steam, a controller-valve mounted on each platform, tubular connec- "tions between "said valves and the steampipe, and tubular connections between said shown and'de'scribed.

'9. Incombination witha railway-car having a "platform 'ateach end, cylinders, pistons in said cylinders, the brakes oes operatively connected with said pistons, a pipe connected with a source of steam, a controller-valve mounted on each platform, tubular connections between sai valves and the steampipe, tubular connections between said valves and the cylinders, and means to drain said pipes, cylinders and tubular connections,

substantially as shown and described.

10. In combination with a railwaycar having a platform at each end, cylinders, pistons in said cylinders, the brake-shoes operatively connected with said pistons, a pipe connected with a source of steam, a controller-valve mounted on each platform, tubular connections between said valves and steampipe, tubular connections between said valves and the cylinders, and spring-actuated drainvalves in said istons to drain the cylinders, pipes and tubular connections, substantially as shown and described.

In witness whereof I have hereunto signed my name in presence of two subscribing witnesses. V

. JOHN POST.

Witnesses: y E. B. SHAVER,

WILMoTW. TREW. 

